A senior Fair Work Commission member has been cleared of criminal wrongdoing over a Christmas party fireworks incident.
Deputy president Gerard Boyce was accused of letting off fireworks at the industrial umpire's Sydney offices during an unofficial work party in December.
Federal workplace safety regulator Comcare told a Senate estimates hearing on Wednesday it had wrapped up its investigation into the incident.
"Comcare didn't find evidence to a criminal standard of contravention of the Workplace Health and Safety Act," chief executive Sue Weston said.
Mr Boyce's behaviour has been raised at multiple estimates hearings.
He was one of seven or eight people interviewed in Comcare's investigation.
An estimates hearing in March was told Fair Work received information firecrackers were let off on a balcony at an unofficial party on December 11.
